/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.j2objc.security;
import java.security.SecureRandomSpi;
/*-[
#import "java/lang/InternalError.h"
#import <Security/SecRandom.h>
]-*/
/**
* Secure random number provider, implemented using the iOS Security Framework.
*
* @author Tom Ball
*/
public class IosSecureRandomImpl extends SecureRandomSpi {
@Override
protected void engineSetSeed(byte[] seed) {
/* not used */
if (seed == null) { // Unit test.
throw new NullPointerException();
}
}
@Override
protected native void engineNextBytes(byte[] bytes) /*-[
nil_chk(bytes);
int error = SecRandomCopyBytes(kSecRandomDefault, bytes->size_, (uint8_t *) bytes->buffer_);
if (error != 0) {
NSString *errorMsg =
[NSString stringWithFormat:@"SecRandomCopyBytes error: %s", strerror(error)];
@throw AUTORELEASE([[JavaLangInternalError alloc] initWithNSString:errorMsg]);
}
]-*/;
@Override
protected byte[] engineGenerateSeed(int numBytes) {
byte[] result = new byte[numBytes];
engineNextBytes(result);
return result;
}
}